Miley Cyrus has dismissed suggestions that she is suffering from anorexia.

The singer-actress sparked fears of a possible eating disorder when she tweeted an image of fast food, along with the caption: "I can't eat it. So I'm just gonna smell the s**ttttt out of it! My mouth is LITERALLY watering."

Cyrus later responded to some messages of concern from Twitter followers by clarifying that she is simply trying out a new diet.

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"For everyone calling me anorexic I have a gluten and lactose allergy. It's not about weight it's about health. Gluten is crapppp anyway," she wrote.

"[E]veryone should try no gluten for a week! The change in your skin, physical and mental health is amazing! U won't go back!"